﻿history of chalk (calcium carbonate)﻿

How/Why was Calcium Carbonate discovered?

Chalk was not invented. It was already there and humans started using i when they found. They used it because it was very useful for writing, especially in those days because pens and pencils weren't invented back then.

When was Calcium Carbonate discovered?

No one knows when chalk was first discovered and when it was first used. This valuable mineral has been used since ancient cultures and people have used it for markings and paintings in ancient caves, possibly even since ice age.

How has it evolved overtime?

Chalk has changed a lot over time. People use for chalkboards in schools and many other places. The chalk that is used in schools today is a clay composite. What people found it like was in hills and mountains. Before it came in schools, ancient people used it for markings and paintings in caves and on walls. They used it to paint animals, which was part of their religions and/or cultures. Overtime, when people started to become more civilized and when education came along, people started using chalk in schools, when students too used chalk to write on small states. Now, teachers use chalk on chalkboards.